Database: implemented reflection exceptions
Database: added tests for reflection exceptions
Database: reflection can return only NULL [Closes #778]
FileUpload::move() - added unlink() as prevention for permission denied error in move_uploaded_file()
Merge pull request #972 from hrach/database-reflection

Database reflection
typos, renamed some variables
typos
Latte: recognizes {Namespace\Class::member}
Merge branch 'master' of git://github.com/nette/nette